4. (1) The Government may, if it considers it necessary for any purpose of this Ordinance, appoint in any local area additional medical or public health establishment to perform such duties and exercise such functions as the Government may direct. (2) Such additional establishment shall, unless and to such extent as the Government otherwise directs, be under the control of the Government, but its salaries and allowances or any specified portion thereof shall, if the Government so orders, be paid out of the funds of the local authority.